Floor polishing machine



Dec. 5, 1933. J. sAssANo 1,938,300

FLOOR POLI SHING MACHINE Filed oct. 2i, 1951 2 sheets-sheet 1 FLOOR POLI SHING MACHINE Filed Oct. 2l, 1931 2 Sheets-Sheet 2 dttouwsp Patented Dec. 5, 1933 A.PATENT ori-lcs 1.938.300 noon Pomsnmc monum- Joseph Sassano, Yonkers, N. Y.

Application October 21,

5Claims.

This invention relates to floor polishing ma# chines and has for one of its objects to provide an apparatus of this character which will be simple in construction, comparatively inexpensive to manufacture and more eflicient in use than those which have been heretofore proposed.

A further. object ,of the invention is to provide a waxing and polishing machine which will be unusually quiet in operation.

A still further object of the invention is to provide an improved detachable driving connection between the waxing or polishing elements and their driving spindles in which provision is made for adjustment to compensate for uneven wear of the said waxing and polishing elements, and also to maintain running clearance between certain of the parts.

With the above and other objects in view which will appear as the description proceeds the invention consists in the novel details of construction and combinations of parts more fully hereinafter described and particularly pointed out in the appended claims.

Referring to the accompanying drawings forming a part of this specification in which like reference characters designate like parts in all the views:-

Figure 1 is a vertical sectional elevational view of a machine constructed in accordance with the present invention, taken approximately on the plane indicated by the line 1-1 of Figure 3;

Figure 2 is a vertical sectional View at right angles to Figure 1, taken approximately on the plane indicated by the line 2-2 of said figure;

Figure 3 is a horizontal sectional plan view of the parts shown in Figures 1 and 2, taken approinmately on the plane indicated by the line 3-3 of Figure 1;

Figure 4 is an enlarged detail sectional view of the lower end of one of the driving spindles with the brush driving element attached thereto- Figure 5 is an inverted plan view of the driving element shown in Figure 4; p

Figure 6 is an enlarged vertical sectional view through one of the brushes or polishing elements showing in section, the socket for receiving the driving member shown in Figure 4, together with the means for adjusting the relation between the two; and

Figure 7 is a top plan view, partly broken away, of the socket member shown in Figure 6.

As will be readily apparent from Figures 1, 2 and 3 the machine comprises a casing or housing 10 which preferably takes the form of a casting of substantially the configuration shown in these 1931. serial N0. 570,199

(cl. 1549 v figures, in which is journalled as by the anti-friction bearings 11 and l2, the vertically disposed parallel spindles 13 and 14. The said spindles respectively carry the driving pulleys 15 and 16 rigidly mounted thereon in any suitable manner, and which are engaged by the driving belts 17 and 18 respectively. The said belts are preferably substantially V-shaped in cross section, in as much as it has been found from actual experience that belts of this type tend to eliminate noise and produce a quieter running machine. The said belts respectively pass around the grooved pulleys 19 and 20 which are rigidly mounted upon the shaft 2l ofanl electric or other motor 22. The

said motor 22 is provided with a base 23 having 7o slots 24 which receive the upstanding bolts or pins 25, carried by the rear extension 10 of the housing 10 whereby the said motor may be adjusted forwardly and backwardly to take up slack in the belts 17 and 18 as will be readily understood.

Below the pulleys 15 and 16 the casing or housing 10 is preferably provided with a removable horizontal partition wall or plate 10 which is apertured as at 26 and 27 to accommodate the spindles 13 and 14.' It is desirable to exclude dirt and wax from the mechanism housed within the casing 10 above this plate 10 and to this end the said plate may be provided adjacent the apertures 26 and 27 with the dust excluding packing material 28 as clearly shown in Figures 1 and 2, which material coacts with the lower surface of the hubs of the pulleys 15 and 16 as indicated.

The spindles 13 and 14 carry below the plate 10" the brushes or other waxing and polishing elements 30 and 31 respectively. It is, of course, desirable that these elements vbe readily removable in order that they may be replaced in the event of wear, and also in order that the machine may be assembled and disassembled for repair of the other parts should that become necessary, and to this end there is provided the readily dev tachable connection between the spindles 13 and 14 and their corresponding brush elements 30 and 31 shown in detail in Figures'4 to 7 inclusive. Referring more particularly to these said figures it will be seen that the spindle such as 13 has rigidly secured to its lower end as by the pin 32, a driving member 33 which is substantially cylindrical in form and which is provided with a pair of diametrically opposed driving lugs 34. The lower end 35 of the said member is substantially hemispherical in form as clearly indicated in Figures 2, 4 and 5 and it is provided at its upper end with a laterally extending circular flange 36, the

purpose of which will appear more fully below. The said member is also provided with a pair of diametrically opposed laterally sliding plungers 37, which are normally pressed outwardly as shown in Figures 4 and 5 by helical springs 38, positioned behind them.

The head 40 of the brush element such as 30 is provided at its center with a socket member 41 which receives the driving member 33, just described as shown in Figure 2. The said socket member 41 preferably comprises a lateral ange 42 by means of which it may be secured to the brush head 40 and the depending cup portion 43 which is provided upon its inner surface with the driving lugs 44 which are adapted to be engaged by the companion lugs 34 of the driving member 33 after they have been inserted through the cut away portions 45 of the inwardly extending lip 46 of the socket. In other words the connection is made by introducing the lugs 34 of the driving member through the cut away portions 45 of the inwardly projecting lip or flange 46 until the said lugs 34 are below the said flange and then rotating one part relative to the other to bring the said lugs 34 into engagement with the complementary lugs 44 of the socket, whereupon rotation of the spindle 13 will be transmitted to the brush element such as 30 through the lugs 34 and 44 as will be readily understood. In this position the lip 46 prevents the withdrawal of the drive 33 from the socket, should the machine be lifted from the floor.

It is of course desirable to exclude so far as possible dirt and wax from these connections and it is for this purpose that the driving element 33 ,is provided with the outwardly extending' ange 36 which, as will be clear from Figures 1 and 2, overlaps the aperture and the socket member 41. It has been found however, that if the flanges 36 and 42 are permitted to contact with one another an undesirable rattle or noise results and in order that suitable clearance may be maintained between these said flanges, means are provided for adjusting the brush elements relative to the driving members. These means comprise the bearing member 50 having the curved bearing surface 51 for receiving the complementary curved end 35 of the driving element 33 as shown in Figure 2. The said bearing member 50 is provided with a threaded stud 52 projecting through and threaded in the bottom wall 53 of the socket member 41 and carries a lock nut 54 by means of which the said bearing member may be locked in any desired adjusted position.

With the parts in the assembled position shown in Figure 2, the spring pressed plungers 37 engage the inner surface of the cup portion 43 of the socket 41 and serve to prevent the unintentional relative rotation and disengagement of the parts. As will be noted from Figure 2, a certain amount of clearance is provided between the surface of the driving member 33 and the socket member 41 which coupled with the yieldability of the plungers 37 and the curvatures 35 and 51 of the engaging portions of the members 33 and 50 permits a slight-amount of rocking movement to the brush whereby it may accommodate itself to any unevenness in the surface being waxed or polished. Furthermore, should the brushes -wear unevenly, as they usually do in actual practice, such wear may be compensated for through adjustment of the bearing member I50.

The machine may be moved over the surface being polished by means of a suitable handle 55 which is adjustably connected to the bracket 56,

carried by the housing 10 by the well known serrated adjustment 57 shown in Figures 1 and 3.

It is obvious that those skilled in the art may vary the details of construction as well as the precise arrangement of parts without departing from the spirit of the invention, and therefore it is not wished to be limited to the above disclosure except as may be required by the claims.

What is claimed is:

1. In a machine of the class described, a driving spindle; a brush element adapted to be driven by said spindle; driving connections between said spindle and brush element; and means comprising a bearing stud vertically adjustably carried by said brush element and engaging said spindle for adjusting said connections to compensate for wear of the brush.

2. In a. machine of the class described, a driving spindle; a brush element adapted to be driven by said spindle; readily detachable driving connections between said brush and spindle, comprising a driving member carried by the spindle and a socket member carried by the brush element for receiving said driving member, said driving member having a dirt-excluding flange overlapping the socket of the brush member; and means for adjusting the relative positions of said driving and socket members to maintain running clearance between said flange and said socket member.

3. In a machine of the class described, a driving spindle; a brush element adapted to be'driven by said spindle; readily detachable driving connections between said brush and spindle, comprising a driving member carried by the spindle and a socket member carried by the brush element for receiving said driving member, said driving member having a dirt-excluding flange overlapping the socket of the brush member and a vertically adjustable bearing member carried by said socket member, for receiving the lower end of said driving member, for adjusting the relative positions of said driving and socket members to maintain running clearance between said flange and said socket members.

4. In a machine of the class described, a driving spindle; a brush element adapted to be driven' by said spindle; readily detachable driving connections between said brush and spindle, comprising a driving member carried by the spindle and a socket member carried by the brush element for receiving said driving member, said driving member having a dirtlexcluding flange overlapping the socket of the brush member; and a vertically adjustable bearing member carried by said socket member, receiving the lower end of said driving member, for adjusting the relative positions of said driving and socket members to maintain running clearance between said flange and said socket member, said adjustable bearing member and said driving member being provided with complemental curved engaging surfaces to permit rocking movements of the brush element whereby it may accommodate itself to uneven floor surfaces.

5. In a machine of the class described, having a driving spindle and a brush element adapted to be driven by said spindle, readily detachable driving connections between said spindle and brush element, comprising a driving member having driving lugs, carried by said spindle, and a socket member carried by said brush element, having lugs engageable byssaid rst named lugs through partial rotation of one part relative to the other, whereby power may be transmitted rotation; and friction means carried by one o1' said members and engaging the wall of the other member to prevent reverse partial rotation thereof, whereby said members might become unintentionally disengaged.

JOSEPH BASSANO.

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